The rare sailback houndshark, which has an unusually large dorsal fin, was first described by scientists in 1973. That was the last record of its existence, until now
Več na: https://www.newscientist.com/article/2493952-long-lost-sailback-shark-rediscovered-after-more-than-50-years/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home
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